After the major tornado damage in the DFW Metroplex area, they do not have to worry about a tornado the rest of the night.
I am concerned there is a slight chance of a tornado after midnight in the Texas Hill Country, including Austin and San Antonio. Below is the forecast radar for 2am CST.
Here is the forecast radar for 8am Sunday.
Regardless, note the freezing rain in western Oklahoma. There is a high likelihood of power failures in Oklahoma due to the high winds and ice accumulation.